Originally published as Genetics Published Articles Ahead of Print on July 14, 2005.

Genetics, Vol. 171, 839-843, October 2005, Copyright © 2005
doi:10.1534/genetics.105.044040

Blocked Recombination Along the Mating-Type Chromosomes of Neurospora tetrasperma Involves Both Structural Heterozygosity and Autosomal Genes

Department of Biological Sciences, Stanford University, Stanford, California 94305-5020

1 Address for correspondence: Department of Biological Sciences, 371 Serra Mall, Stanford University, Stanford, CA 94305-5020.
E-mail: djjacob{at}stanford.edu

The Neurospora tetrasperma mating-type chromosomes have been shown to be structurally heterozygous by reciprocal introgression of these chromosomes between N. tetrasperma and N. crassa. This structural heterozygosity correlates with both a previously described recombination block and cytologically visible unpaired chromosomes at pachytene. Genes on the autosomes are also implicated in blocking recombination.




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